问题描述
我有一个问题：直到今天，我使用包含
内容类型的标题发送HTML邮件：为text / html;
现在，我添加了添加附件的功能。为此，我不得不将此行更改为
Content-Type：multipart / mixed;
现在，使用 multipart / mixed 其余的邮件，所以正常的文字，显示为文本/平原。我如何才能意识到这个附件是有效的，而mailtext仍然是HTML？
要发送带有附件的电子邮件，我们需要使用指定混合类型将包含在电子邮件中的multipart / mixed MIME类型。此外，我们想使用multipart / alternative MIME类型发送电子邮件的纯文本和HTML版本。看一下例子：
<？php
//定义电子邮件的接收者
$ to ='[email protected]';
//定义电子邮件的主题
$ subject ='使用附件测试电子邮件;
//创建边界字符串。它必须是唯一的
//所以我们使用MD5算法来生成随机哈希
$ random_hash = md5（date（'r'，time（）））;
//定义要传递的标题。请注意，它们与\\\
$ headers =From：[email protected]\r\\\
Reply-To：[email protected]分开;
//添加边界字符串和MIME类型规范
$ headers。=\r\\\
Content-Type：multipart / mixed; boundary = \PHP混合 - $ random_hash。 \ ;
//将文件内容读入一个字符串，
//用MIME base64，
//编码，并将其拆分成较小的块
$ attachment = chunk_split（base64_encode（的file_get_contents（ 'attachment.zip'）））;
//定义消息的正文。
ob_start（）; //打开输出缓冲
？>
--PHP-mixed-<？php echo $ random_hash; ？>
内容类型：multipart / alternative; boundary =PHP-alt-<？php echo $ random_hash;？>
--PHP-alt-<？php echo $ random_hash; ？>
Content-Type：text / plain; charset =iso-8859-1
Content-Transfer-Encoding：7bit
Hello World！
这是简单的文本电子邮件。
--PHP-alt-<？php echo $ random_hash; ？>
内容类型：text / html; charset =iso-8859-1
Content-Transfer-Encoding：7bit
< h2> Hello World！< / h2>
< p>这是< b> HTML< / b> 。格式化及LT; / p为H.
--PHP-alt-<？php echo $ random_hash; ？> -
--PHP-mixed-<？php echo $ random_hash; ？>
内容类型：application / zip; name =attachment.zip
内容传输编码：base64
内容处理：附件
<？php echo $ attachment; ？>
--PHP-mixed-<？php echo $ random_hash; ？> -
<？php
//将当前缓冲区内容复制到$ message变量中，并删除当前输出缓冲区
$ message = ob_get_clean（）;
//发送电子邮件
$ mail_sent = @mail（$ to，$ subject，$ message，$ headers）;
//如果邮件发送成功打印邮件发送。否则打印邮件失败
echo $ mail_sent？ 邮件发送：邮件失败;
？>
如您所见，发送带附件的电子邮件很容易完成。在前面的例子中，我们使用了multipart / mixed MIME类型，其中包含多个/替代的MIME类型，它指定了两个版本的电子邮件。要包括我们的消息的附件，我们从指定的文件中读取数据到一个字符串，用base64进行编码，将其拆分成更小的块，以确保它符合MIME规范，然后将其作为附件包含。 >
I got a problem: Until today, I sent HTML mails with PHP using a header which contains
Content-type: text/html;
Now, I added functionality to add attachments. For this, I had to change this line to
Content-Type: multipart/mixed;
Now, with multipart/mixed, the rest of the mail, so the normal text, gets shown just as text/plain. How can I realize that attachments work and the mailtext is still HTML?
To send an email with attachment we need to use the multipart/mixed MIME type that specifies that mixed types will be included in the email. Moreover, we want to use multipart/alternative MIME type to send both plain-text and HTML version of the email.Have a look at the example:
<?php
//define the receiver of the email
$to = '[email protected]';
//define the subject of the email
$subject = 'Test email with attachment';
//create a boundary string. It must be unique
//so we use the MD5 algorithm to generate a random hash
$random_hash = md5(date('r', time()));
//define the headers we want passed. Note that they are separated with \r\n
$headers = "From: [email protected]\r\nReply-To: [email protected]";
//add boundary string and mime type specification
$headers .= "\r\nContent-Type: multipart/mixed; boundary=\"PHP-mixed-".$random_hash."\"";
//read the atachment file contents into a string,
//encode it with MIME base64,
//and split it into smaller chunks
$attachment = chunk_split(base64_encode(file_get_contents('attachment.zip')));
//define the body of the message.
ob_start(); //Turn on output buffering
?>
--PHP-mixed-<?php echo $random_hash; ?>
Content-Type: multipart/alternative; boundary="PHP-alt-<?php echo $random_hash; ?>"
--PHP-alt-<?php echo $random_hash; ?>
Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
Hello World!!!
This is simple text email message.
--PHP-alt-<?php echo $random_hash; ?>
Content-Type: text/html; charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
<h2>Hello World!</h2>
<p>This is something with <b>HTML</b> formatting.</p>
--PHP-alt-<?php echo $random_hash; ?>--
--PHP-mixed-<?php echo $random_hash; ?>
Content-Type: application/zip; name="attachment.zip"
Content-Transfer-Encoding: base64
Content-Disposition: attachment
<?php echo $attachment; ?>
--PHP-mixed-<?php echo $random_hash; ?>--
<?php
//copy current buffer contents into $message variable and delete current output buffer
$message = ob_get_clean();
//send the email
$mail_sent = @mail( $to, $subject, $message, $headers );
//if the message is sent successfully print "Mail sent". Otherwise print "Mail failed"
echo $mail_sent ? "Mail sent" : "Mail failed";
?>
As you can see, sending an email with attachment is easy to accomplish. In the preceding example we have multipart/mixed MIME type, and inside it we have multipart/alternative MIME type that specifies two versions of the email. To include an attachment to our message, we read the data from the specified file into a string, encode it with base64, split it in smaller chunks to make sure that it matches the MIME specifications and then include it as an attachment.
这篇关于发送带有附件的PHP HTML邮件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！